Sökning: id:"swepub:oai:DiVA.org:kth-159360" >
Electrospinning of ...
Electrospinning of recycled PET to generate tough mesomorphic fibre membranes for smoke filtration
-
Strain, I. N. (författare)
-
- Wu, Qiong (författare)
- KTH,Polymera material
-
- Pourrahimi, Amir Masoud (författare)
- KTH,Polymera material
-
visa fler...
-
- Hedenqvist, Mikael S. (författare)
- KTH,Polymera material
-
- Olsson, Richard T. (författare)
- KTH,Polymera material
-
- Andersson, Richard L. (författare)
- KTH,Polymera material
-
visa färre...
-
(creator_code:org_t)
- 2015
- 2015
- Engelska.
-
Ingår i: Journal of Materials Chemistry A. - : Royal Society of Chemistry (RSC). - 2050-7488 .- 2050-7496. ; 3:4, s. 1632-1640
- Relaterad länk:
-
https://pubs.rsc.org...
-
visa fler...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Tough fibrous membranes for smoke filtration have been developed from recycled polyethylene terephthalate (PET) bottles by solution electrospinning. The fibre thicknesses were controlled from 0.4 to 4.3 mu m by adjustment of the spinning conditions. The highest fibre strength and toughness were obtained for fibres with an average diameter of 1.0 mu m, 62.5 MPa and 65.8 MJ m(-3), respectively. The X-ray diffraction (XRD) patterns of the fibres showed a skewed amorphous halo, whereas the differential scanning calorimetry (DSC) results revealed an apparent crystallinity of 6-8% for the 0.4 and 1 mu m fibres and 0.2% crystallinity for the 4.3 mu m fibres. Heat shrinkage experiments were conducted by exposing the fibres to a temperature above their glass transition temperature (T-g). The test revealed a remarkable capability of the thinnest fibres to shrink by 50%, which was in contrast to the 4.3 mu m fibres, which displayed only 4% shrinkage. These thinner fibres aka showed a significantly higher glass transition temperature (+15 degrees C) than that of the 4.3 mu m fibres. The results suggested an internal morphology with a high degree of molecular orientation in the amorphous segments along the thinner fibres, consistent with a constrained mesomorphic phase formed during their rapid solidification in the electric field. Air filtration was demonstrated with cigarette smoke as a model substance passed through the fibre mats. The 0.4 mu m fibres showed the most effective smoke filtration and a capacity to absorb 43x its own weight in smoke residuals. whereas the 1 mu m fibres showed the best combination of filtration capacity (32x) and mechanical robustness. The use of recycled PET in the form of nanofibres is a novel way of turning waste into higher-value products.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Differential scanning calorimetry
- Electric fields
- Electrospinning
- Fibrous membranes
- Filtration
- Glass
- Glass transition
- Microfiltration
- Molecular orientation
- Plastic bottles
- Polyethylenes
- Rapid solidification
- Recycling
- Shrinkage
- Smoke
- Spinning (fibers)
- Temperature
- X ray diffraction
- Average diameter
- Cigarette smokes
- Filtration capacity
- Internal morphology
- Mechanical robustness
- Mesomorphic phase
- Recycled polyethylene terephthalates
- Spinning conditions
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas